JP5355630B2 - Light emitting device - Google Patents

Light emitting device Download PDF

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JP5355630B2
JP5355630B2 JP2011150746A JP2011150746A JP5355630B2 JP 5355630 B2 JP5355630 B2 JP 5355630B2 JP 2011150746 A JP2011150746 A JP 2011150746A JP 2011150746 A JP2011150746 A JP 2011150746A JP 5355630 B2 JP5355630 B2 JP 5355630B2
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light
color conversion
color
emitting device
led
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JP2013021007A (en
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明日美 吉澤
卓生 村井
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Mitsubishi Electric Corp
Mitsubishi Electric Lighting Corp
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Mitsubishi Electric Corp
Mitsubishi Electric Lighting Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting device in which highly efficient color conversion is performed using a sheet. <P>SOLUTION: In a light emitting device 100, a color conversion sheet 113 receives light irradiated from LEDs 112, converts the color of the incident light, and emits the color-converted light. An optical member 114 is overlapped on the light emission side of the color conversion sheet 113 to support the color conversion sheet 113. The optical member 114 has a ladder form and includes an opening 114a for each of the LEDs 112, the opening allowing light to pass therethrough. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

本発明は、発光装置に関するものである。本発明は、特に、ＬＥＤ（発光ダイオード）を使用した発光装置に関するものである。   The present invention relates to a light emitting device. The present invention particularly relates to a light emitting device using an LED (light emitting diode).

近年、白色ＬＥＤが照明用途として広く用いられるようになってきており、その付加価値として、個人の好みや必要に応じて、リアルタイムに照明色を変更できる色変換の機能が求められている。   In recent years, white LEDs have been widely used for illumination purposes, and as an added value, a function of color conversion that can change the illumination color in real time is required according to personal preference and necessity.

ＬＥＤは一灯一灯が１つの特定の光色を出すものが多く、色調を変更するためには、複数のＬＥＤを実装して、その点灯パターンの制御により調色を可能にしたり（例えば、特許文献１参照）、蛍光体を樹脂に分散させた蛍光シート等により色変換を行ったりする必要がある（例えば、特許文献２参照）。   Many LEDs emit one specific light color per lamp, and in order to change the color tone, a plurality of LEDs are mounted, and the color can be adjusted by controlling the lighting pattern (for example, It is necessary to perform color conversion with a fluorescent sheet or the like in which a phosphor is dispersed in a resin (for example, see Patent Document 2).

特開２００５−２２２７５０号公報JP 2005-222750 A 特開２００７−１１６１３３号公報JP 2007-116133 A

複数のＬＥＤにより調色を可能とするものでは、電流値をリモコンやボタンによって制御することで、色を変更するが、目的の光色を得るために複数の光色のＬＥＤを実装しなければならない。このため、その点灯パターンの制御が複雑になり、装置自体も高価になるという課題があった。例えば、特許文献１の装置は、その目的の光色を得るために、異なる光色（赤、緑、青）のＬＥＤを実装し、その電流値を制御する手段をＬＥＤ電球に取り付けたものであり、その点灯パターンの制御が複雑になっている。   In the case where color adjustment is possible with a plurality of LEDs, the color is changed by controlling the current value with a remote control or a button. However, in order to obtain a desired light color, a plurality of light color LEDs must be mounted. Don't be. For this reason, the control of the lighting pattern is complicated, and there is a problem that the device itself is expensive. For example, the device of Patent Document 1 is a device in which LEDs of different light colors (red, green, blue) are mounted in order to obtain the target light color, and a means for controlling the current value is attached to the LED bulb. Yes, the control of the lighting pattern is complicated.

蛍光シートを用いて色変換を行うものでは、シートを通った光の変換効率を向上させるために、透過率の高い樹脂を用いるが、シート交換を容易にするためにシートに腰を持たせる必要がある。このため、ＰＥＴ（ポリエチレンテレフタレート）等の樹脂でシートを覆わなければならず、透過率が損なわれるという課題があった。   In the case of color conversion using a fluorescent sheet, a resin with high transmittance is used in order to improve the conversion efficiency of light passing through the sheet, but it is necessary to hold the sheet in order to facilitate sheet replacement There is. For this reason, the sheet had to be covered with a resin such as PET (polyethylene terephthalate), and there was a problem that the transmittance was impaired.

本発明は、例えば、発光装置において、シートを用いて効率の高い色変換を行うことを目的とする。   An object of the present invention is to perform efficient color conversion using a sheet in a light emitting device, for example.

本発明の一の態様に係る発光装置は、
光を照射する光源と、
前記光源から照射される光を入射し、入射した光の色を変換して当該光を出射するシート状の色変換部材と、
前記色変換部材の光を入射する側と出射する側との少なくとも一方に重ねられて前記色変換部材を支持する枠状の支持部材であり、当該光を通過させる開口部が複数設けられた支持部材とを備える。 A light emitting device according to one embodiment of the present invention includes:
A light source that emits light;
A sheet-like color conversion member that receives light emitted from the light source, converts the color of the incident light, and emits the light; and
A frame-shaped support member that supports the color conversion member by being superimposed on at least one of the light incident side and the light emission side of the color conversion member, and is provided with a plurality of openings that allow the light to pass therethrough. A member.

本発明の一の態様では、発光装置において、光を通過させる開口部が複数設けられた枠状の支持部材が、色変換部材の光を入射する側と出射する側との少なくとも一方に重ねられて色変換部材を支持する。このため、本発明の一の態様によれば、必ずしも色変換部材をＰＥＴ等の樹脂で覆わなくてよくなり、効率の高い色変換を行うことが可能となる。   In one embodiment of the present invention, in the light-emitting device, a frame-shaped support member provided with a plurality of openings through which light passes is overlapped on at least one of the light incident side and the light emission side of the color conversion member. Supporting the color conversion member. For this reason, according to one aspect of the present invention, it is not always necessary to cover the color conversion member with a resin such as PET, and it is possible to perform color conversion with high efficiency.

実施の形態１に係る発光装置の分解斜視図。2 is an exploded perspective view of the light emitting device according to Embodiment 1. FIG. 実施の形態１に係る発光装置のＡ−Ａ断面図。FIG. 3 is a cross-sectional view of the light emitting device according to Embodiment 1 taken along line AA. 実施の形態１に係る発光装置のＢ−Ｂ断面図。FIG. 3 is a cross-sectional view of the light-emitting device according to Embodiment 1 taken along line BB. 実施の形態２に係る発光装置のＡ−Ａ断面図。FIG. 6 is a cross-sectional view of the light emitting device according to Embodiment 2 taken along line AA. 実施の形態２に係る発光装置のＢ−Ｂ断面図。BB sectional drawing of the light-emitting device which concerns on Embodiment 2. FIG. 実施の形態２の変形例に係る発光装置のＢ−Ｂ断面図。BB sectional drawing of the light-emitting device which concerns on the modification of Embodiment 2. FIG.

以下、本発明の実施の形態について、図を用いて説明する。なお、各実施の形態の説明において、「上」、「下」、「左」、「右」、「前」、「後」、「表」、「裏」といった方向は、説明の便宜上、そのように記しているだけであって、装置、器具、部品等の配置や向き等を限定するものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of each embodiment, the directions such as “up”, “down”, “left”, “right”, “front”, “back”, “front”, “back” are However, it is not intended to limit the arrangement or orientation of devices, instruments, parts, or the like.

実施の形態１．
図１は、本実施の形態に係る発光装置１００の分解斜視図である。図２は、発光装置１００のＡ−Ａ断面図である。図３は、発光装置１００のＢ−Ｂ断面図である。なお、図１及び図３では、発光装置１００の一部のみを示している。 Embodiment 1 FIG.
FIG. 1 is an exploded perspective view of a light emitting device 100 according to the present embodiment. FIG. 2 is a cross-sectional view of the light emitting device 100 taken along the line AA. FIG. 3 is a BB cross-sectional view of the light emitting device 100. 1 and 3, only a part of the light emitting device 100 is shown.

発光装置１００は、ＬＥＤ実装基板１１１、ＬＥＤ１１２、色変換シート１１３、梯子状の光学部材１１４、リフレクタ１１５、表面カバー１１６、筐体１１７を備える。発光装置１００は、例えば、ＬＥＤ１１２の発光面が下向きとなるように取付部材１２０にネジ等で固定され（図で示したのとは上下逆向きになる）、照明装置等として利用される。   The light emitting device 100 includes an LED mounting substrate 111, an LED 112, a color conversion sheet 113, a ladder-shaped optical member 114, a reflector 115, a surface cover 116, and a housing 117. For example, the light emitting device 100 is fixed to the mounting member 120 with screws or the like so that the light emitting surface of the LED 112 faces downward (upside down as shown in the figure), and is used as a lighting device or the like.

ＬＥＤ実装基板１１１は、例えば、安価なガラスエポキシ基板、あるいは、表面に絶縁層が形成された金属基板である。ＬＥＤ実装基板１１１には、４つのＬＥＤ１１２が直線状に１列に配置されている。図示していないが、ＬＥＤ実装基板１１１には、ＬＥＤ１１２に外部電源から電力を供給するための導電パターンが形成されている。なお、本実施の形態において、ＬＥＤ１１２の実装数や配置は、発光装置１００の用途等に応じて適宜変更して構わない。   The LED mounting substrate 111 is, for example, an inexpensive glass epoxy substrate or a metal substrate having an insulating layer formed on the surface. On the LED mounting substrate 111, four LEDs 112 are arranged in a line in a straight line. Although not shown, a conductive pattern for supplying power from an external power source to the LED 112 is formed on the LED mounting substrate 111. In the present embodiment, the number and arrangement of the LEDs 112 may be appropriately changed according to the use of the light emitting device 100 or the like.

ＬＥＤ１１２は、光を照射する光源の一例である。ＬＥＤ１１２は、例えば白色ＬＥＤであり、図ではＳＭＤ（表面実装部品）タイプのＬＥＤとしたが、砲弾型のＬＥＤであってもよい。ＬＥＤ１１２は、例えば一般的な白色ＬＥＤの構成をとり、青色ＬＥＤと、それを覆うように設けられた透過性の高い蛍光体含有樹脂層と、さらにその周りを囲うセラミックス等の樹脂でできたパッケージとからなる。ＬＥＤ１１２は、前述した導電パターンに電気的に接続するための電極を有する。青色ＬＥＤは金線ワイヤにより電極と接続されており、電極から供給される電力により発光する。蛍光体含有樹脂層に混入される蛍光体は、例えばＹＡＧ（イットリウム・アルミニウム・ガーネット）蛍光体であり、青色ＬＥＤが発する光によって励起され、４８０〜７８０ｎｍ（ナノメートル）の間にスペクトルを持ち、５６０ｎｍ付近を主波長とする光を発する。青色ＬＥＤが発する光と蛍光体が発する光は補色関係にあるため、その合成光は擬似的に白色を呈することとなる。蛍光体含有樹脂層の素材は、エポキシ樹脂やシリコーン樹脂である。ＬＥＤ素子は熱によって光束が減少するため、耐熱性、耐薬品性、自己潤滑性、耐摩擦性に優れ、エポキシ樹脂と比較しても安定性が高いシリコーン樹脂を用いることが好ましい。なお、本実施の形態において、ＬＥＤ１１２は、有機ＥＬ（エレクトロルミネッセンス）等、他の種類の光源に置き換えても構わない。   The LED 112 is an example of a light source that emits light. The LED 112 is, for example, a white LED, and is an SMD (surface mount component) type LED in the figure, but may be a bullet type LED. The LED 112 has a configuration of, for example, a general white LED, a blue LED, a highly transparent phosphor-containing resin layer provided so as to cover the LED, and a package made of a resin such as ceramics surrounding the LED 112 It consists of. The LED 112 has an electrode for electrically connecting to the conductive pattern described above. The blue LED is connected to the electrode by a gold wire, and emits light by electric power supplied from the electrode. The phosphor mixed in the phosphor-containing resin layer is, for example, a YAG (yttrium, aluminum, garnet) phosphor, excited by light emitted from a blue LED, and having a spectrum between 480 and 780 nm (nanometers), It emits light having a dominant wavelength around 560 nm. Since the light emitted from the blue LED and the light emitted from the phosphor are in a complementary color relationship, the combined light has a pseudo white color. The material of the phosphor-containing resin layer is an epoxy resin or a silicone resin. Since the light flux of the LED element is reduced by heat, it is preferable to use a silicone resin that is excellent in heat resistance, chemical resistance, self-lubricating property, and friction resistance, and has high stability compared to an epoxy resin. In the present embodiment, the LED 112 may be replaced with another type of light source such as an organic EL (electroluminescence).

色変換シート１１３は、光源からの光の色を変換するシート状の色変換部材の一例である。色変換シート１１３は、ＬＥＤ１１２から照射される光を入射し、入射した光の色を変換して当該光を出射する。   The color conversion sheet 113 is an example of a sheet-like color conversion member that converts the color of light from a light source. The color conversion sheet 113 receives the light emitted from the LED 112, converts the color of the incident light, and emits the light.

色変換シート１１３としては、低屈折率のシート、あるいは、反射防止膜を両面に貼ったシートを用いることが好ましい。光は異なる物質の界面で、入射角に応じて反射波が発生するため、例えば、光の１／４波長の薄膜を貼ることにより、反射量を低減させることができる。その結果、色変換シート１１３がＬＥＤ１１２から発せられる光を効率よく透過して、効率よく色変換することができる。   As the color conversion sheet 113, it is preferable to use a low refractive index sheet or a sheet having an antireflection film pasted on both sides. Since reflected waves are generated according to the incident angle at the interface between different substances, for example, the amount of reflection can be reduced by applying a thin film having a quarter wavelength of light. As a result, the color conversion sheet 113 can efficiently transmit the light emitted from the LED 112 and perform color conversion efficiently.

色変換シート１１３は、透光性を持つ樹脂バインダで色変換材料をバインドしてシート状に形成される。樹脂バインダとしては、例えばゴム状のシリコーン樹脂を用いることができ、この場合、色変換シート１１３の柔軟性や耐候性を高めることができる。   The color conversion sheet 113 is formed in a sheet shape by binding a color conversion material with a translucent resin binder. As the resin binder, for example, a rubber-like silicone resin can be used. In this case, the flexibility and weather resistance of the color conversion sheet 113 can be improved.

色変換シート１１３の厚さは、色変換シート１１３の透過率を高めに維持するため、２ｍｍ（ミリメートル）以下が望ましく、１ｍｍ未満、即ち、数百μｍ（マイクロメートル）であることがより望ましい。   The thickness of the color conversion sheet 113 is preferably 2 mm (millimeters) or less, and more preferably less than 1 mm, that is, several hundreds of micrometers (micrometers) in order to keep the transmittance of the color conversion sheet 113 high.

色変換シート１１３に含まれる色変換材料は、蛍光体あるいは有機色素顔料であり、目的とする光色によって異なる。例えばＬＥＤ１１２が発する白色光の色温度よりも低い色温度を目的の色温度とする場合、色変換材料として蛍光体を用いるのが好ましい。蛍光体は、ＬＥＤ１１２が発する光を吸収し、ＬＥＤ１１２が発する光よりも長い波長の光を放出するため、色素顔料に比べて色変換効率を高くすることができる。一方、例えば青色や赤色等、特殊な色の照明色を目的の色とする場合、色変換材料として有機色素等の色素顔料を用いるのが好ましい。   The color conversion material contained in the color conversion sheet 113 is a phosphor or an organic pigment, and varies depending on the intended light color. For example, when the target color temperature is a color temperature lower than the color temperature of white light emitted from the LED 112, it is preferable to use a phosphor as the color conversion material. Since the phosphor absorbs light emitted from the LED 112 and emits light having a longer wavelength than the light emitted from the LED 112, the color conversion efficiency can be increased as compared with the pigment. On the other hand, when a special illumination color such as blue or red is used as the target color, it is preferable to use a pigment pigment such as an organic pigment as the color conversion material.

梯子状の光学部材１１４は、色変換部材を支持する枠状の支持部材の一例である。光学部材１１４は、色変換シート１１３の光を出射する側に重ねられて色変換シート１１３を支持している。図示していないが、光学部材１１４は、例えばＬＥＤ実装基板１１１にネジ等で固定されている。なお、光学部材１１４は、色変換シート１１３の光を入射する側に重ねられて色変換シート１１３を支持してもよい。あるいは、光学部材１１４は、色変換シート１１３の光を入射する側と出射する側との両方に重ねられて色変換シート１１３を支持してもよい。即ち、光学部材１１４は、色変換シート１１３を挟んで固定してもよい。   The ladder-like optical member 114 is an example of a frame-like support member that supports the color conversion member. The optical member 114 is overlapped on the light emitting side of the color conversion sheet 113 and supports the color conversion sheet 113. Although not shown, the optical member 114 is fixed to the LED mounting substrate 111 with screws or the like, for example. The optical member 114 may be overlapped with the light incident side of the color conversion sheet 113 to support the color conversion sheet 113. Alternatively, the optical member 114 may support the color conversion sheet 113 by being superimposed on both the light incident side and the light emission side of the color conversion sheet 113. That is, the optical member 114 may be fixed with the color conversion sheet 113 interposed therebetween.

光学部材１１４には、光を通過させる開口部１１４ａがＬＥＤ１１２ごとに設けられている。即ち、光学部材１１４には、４つの開口部１１４ａが設けられている。なお、本実施の形態において、開口部１１４ａの数はＬＥＤ１１２の実装数より少なくてもよい。即ち、１つの開口部１１４ａが２つ以上のＬＥＤ１１２に対応していてもよい。   The optical member 114 is provided with an opening 114 a through which light passes for each LED 112. That is, the optical member 114 is provided with four openings 114a. In the present embodiment, the number of openings 114a may be smaller than the number of LEDs 112 mounted. That is, one opening 114a may correspond to two or more LEDs 112.

光学部材１１４の厚さは、１〜１０ｍｍであり、光学部材１１４より厚さが薄い色変換シート１１３の自重により垂れないようにするのに好適である。   The thickness of the optical member 114 is 1 to 10 mm, which is suitable for preventing the optical member 114 from drooping due to its own weight, which is thinner than the optical member 114.

光学部材１１４は、例えば、高反射性のポリカーボネート樹脂で形成されている。光学部材１１４に反射率の良い材料を用いることで、光を拡散させやすくなり、指向性の強いＬＥＤ１１２の光を和らげ、光の照射範囲を広げることができる。特に、開口部１１４ａの周壁１１４ｂで光を反射することができるため、ＬＥＤ１１２から出た光のうち水平方向から４５°の方向へ出た光がそのまま出射することなく、拡散されて出射することになり、発光効率が向上する。また、光を拡散させるポリカーボネート樹脂で形成された光学部材１１４において、上記のように、厚み方向に幅を持たせれば、グレアを低減させることができる。   The optical member 114 is made of, for example, a highly reflective polycarbonate resin. By using a material with good reflectivity for the optical member 114, light can be easily diffused, light of the LED 112 having high directivity can be softened, and a light irradiation range can be widened. In particular, since the light can be reflected by the peripheral wall 114b of the opening 114a, the light emitted from the LED 112 in the direction of 45 ° from the horizontal direction is diffused and emitted as it is. Thus, the light emission efficiency is improved. Further, in the optical member 114 formed of a polycarbonate resin that diffuses light, as described above, if the width is given in the thickness direction, glare can be reduced.

なお、本実施の形態において、光学部材１１４は、梯子状以外の形状でもよい。例えば、開口部１１４ａが平面視四角形状でなく、平面視円形状等であってもよい。   In the present embodiment, the optical member 114 may have a shape other than the ladder shape. For example, the opening 114a may have a circular shape in plan view instead of a square shape in plan view.

色変換シート１１３及び光学部材１１４は、発光装置１００に対して着脱及び交換可能であることが望ましい。例えば、色変換シート１１３を目的とする光色に応じて複数種類用意しておき、これらを交換できるようにしてもよい。   The color conversion sheet 113 and the optical member 114 are desirably detachable and replaceable with respect to the light emitting device 100. For example, a plurality of types of color conversion sheets 113 may be prepared according to the target light color, and these may be exchanged.

以上説明したように、本実施の形態では、光拡散効果があり、反射率の高い材料を梯子状にかたどった光学部材１１４を、色変換シート１１３に重ねて、色変換シート１１３を固定している。光学部材１１４は、例えば筐体１１７の溝などに色変換シート１１３を押さえつける形で固定されている。このため、色変換シート１１３の強度を高め、色変換シート１１３が自重でたわむのを防ぎ、均一に色変換を行うことができる。即ち、本実施の形態によれば、必ずしも色変換部材をＰＥＴ等の樹脂で覆わなくてよくなり、効率の高い色変換を行うことが可能となる。   As described above, in this embodiment, an optical member 114 having a light diffusion effect and having a highly reflective material shaped like a ladder is stacked on the color conversion sheet 113, and the color conversion sheet 113 is fixed. Yes. The optical member 114 is fixed, for example, in such a manner that the color conversion sheet 113 is pressed against a groove of the housing 117 or the like. For this reason, the strength of the color conversion sheet 113 can be increased, the color conversion sheet 113 can be prevented from being bent by its own weight, and color conversion can be performed uniformly. That is, according to the present embodiment, it is not always necessary to cover the color conversion member with a resin such as PET, and it is possible to perform highly efficient color conversion.

実施の形態２．
本実施の形態について、主に実施の形態１との差異を説明する。 Embodiment 2. FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

図４は、本実施の形態に係る発光装置１００のＡ−Ａ断面図である。図５は、発光装置１００のＢ−Ｂ断面図である。   FIG. 4 is a cross-sectional view of the light emitting device 100 according to the present embodiment taken along the line AA. FIG. 5 is a cross-sectional view of the light emitting device 100 taken along the line BB.

本実施の形態では、色変換シート１１３が、光を入射する側のＬＥＤ１１２と対向する位置に、当該光を拡散させる突起１１３ａを有する。突起１１３ａは、ＬＥＤ１１２の光軸上に頂点を持つ円錐状である。即ち、突起１１３ａは、円錐の軸とＬＥＤ１１２の光軸が一致するように設けられている。本実施の形態によれば、突起１１３ａがＬＥＤ１１２から照射される光のうち、光軸方向に照射される光を和らげる（即ち、光軸に近い光ほど、より多く拡散させる）ため、直下方向のグレアが低減する。なお、本実施の形態において、突起１１３ａの形状は角錐状、半球状、あるいは、その他の形状であっても構わない。   In the present embodiment, the color conversion sheet 113 has a protrusion 113a that diffuses the light at a position facing the LED 112 on the light incident side. The protrusion 113 a has a conical shape having a vertex on the optical axis of the LED 112. That is, the protrusion 113a is provided so that the cone axis and the optical axis of the LED 112 coincide. According to the present embodiment, out of the light emitted from the LED 112 by the projection 113a, the light irradiated in the optical axis direction is softened (that is, the light closer to the optical axis is diffused more), so Glare is reduced. In the present embodiment, the shape of the protrusion 113a may be a pyramid shape, a hemispherical shape, or other shapes.

色変換シート１１３は厚さが薄いため、仮に光学部材１１４で支持されていないとすると、突起１１３ａを有する部分が、その重さにより重力方向に垂れ下がることになり、色変換の効率や均一性が損なわれるとともに、突起１１３ａの円錐の軸とＬＥＤ１１２の光軸が一致しなくなり、所望の光拡散効果が得られなくなるおそれがある。本実施の形態では、色変換シート１１３が光学部材１１４で支持されているため、突起１１３ａを有する部分が重力方向（色変換シート１１３→光学部材１１４の方向）に垂れ下がることを防止又は抑制でき、効率及び均一性の高い色変換を行うことが可能となるとともに、所望の光拡散効果（即ち、グレア低減の効果）が得られる。   Since the color conversion sheet 113 is thin, if it is not supported by the optical member 114, the portion having the protrusion 113a hangs down in the direction of gravity due to its weight, and color conversion efficiency and uniformity are improved. In addition to being damaged, the conical axis of the protrusion 113a may not match the optical axis of the LED 112, and a desired light diffusion effect may not be obtained. In the present embodiment, since the color conversion sheet 113 is supported by the optical member 114, the portion having the protrusion 113a can be prevented or suppressed from drooping in the direction of gravity (the direction of the color conversion sheet 113 → the optical member 114). Color conversion with high efficiency and uniformity can be performed, and a desired light diffusion effect (that is, glare reduction effect) can be obtained.

なお、色変換シート１１３と光学部材１１４との組み合わせの代わりに、図６のように色変換シート１１３より厚手で硬質の透明樹脂に色変換部材を混ぜ、上記のような突起１１３ａを有する光学部材１１４を用いても構わない。この場合にも、前述したのと同様のグレア低減の効果が得られる。なお、光学部材１１４には蛍光体などの色変換部材を混ぜていなくてもよく、その場合、ＬＥＤそのままの光色でグレアの低減した光を得ることができる。   Instead of the combination of the color conversion sheet 113 and the optical member 114, the color conversion member is mixed with a transparent resin that is thicker and harder than the color conversion sheet 113 as shown in FIG. 114 may be used. Also in this case, the same glare reduction effect as described above can be obtained. The optical member 114 does not need to be mixed with a color conversion member such as a phosphor. In that case, light with reduced glare can be obtained with the light color of the LED as it is.

以上、本発明の実施の形態について説明したが、本発明は、これらの実施の形態に限定されるものではなく、必要に応じて種々の変更が可能である。   As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment, A various change is possible as needed.

１００ 発光装置、１１１ ＬＥＤ実装基板、１１２ ＬＥＤ、１１３ 色変換シート、１１３ａ 突起、１１４ 光学部材、１１４ａ 開口部、１１４ｂ 周壁、１１５ リフレクタ、１１６ 表面カバー、１１７ 筐体、１２０ 取付部材。   DESCRIPTION OF SYMBOLS 100 Light-emitting device, 111 LED mounting board, 112 LED, 113 color conversion sheet | seat, 113a protrusion, 114 optical member, 114a opening part, 114b peripheral wall, 115 reflector, 116 surface cover, 117 housing | casing, 120 attachment member

Claims (2)

列をなすように配置され、光を照射する複数の光源と、
前記複数の光源から照射される光を入射し、入射した光の色を変換して当該光を出射するシート状の色変換部材であり、光を入射する側の各光源と対向する位置に、当該光を拡散させる突起を有する色変換部材と、
厚さが１〜１０ミリメートルで前記色変換部材よりも厚く、前記色変換部材の光を入射する側と出射する側との少なくとも一方に重ねられて前記色変換部材を支持する梯子状の支持部材であり、当該光を通過させるとともに周壁で当該光を反射する開口部が光源ごとに設けられた支持部材と、
前記複数の光源の列が延びる方向の両側に１対の傾斜面を有するリフレクタと
を備え、
前記複数の光源の発光面が下向きとなる状態で使用される発光装置であって、
前記色変換部材と前記支持部材とが前記リフレクタの１対の傾斜面に挟まれる位置に配置され、前記支持部材が当該位置で前記色変換部材を重力方向と逆向きに支持することを特徴とする発光装置。 A plurality of light sources arranged in rows and emitting light;
It is a sheet-like color conversion member that enters the light emitted from the plurality of light sources, converts the color of the incident light, and emits the light, at a position facing each light source on the light incident side, A color conversion member having a protrusion for diffusing the light ;
A ladder- shaped support member that is 1 to 10 millimeters thicker than the color conversion member and that overlaps at least one of the light incident side and the light emission side of the color conversion member to support the color conversion member A support member provided for each light source with an opening that transmits the light and reflects the light on the peripheral wall ;
A reflector having a pair of inclined surfaces on both sides in the extending direction of the plurality of light source rows ,
A light emitting device used in a state in which the light emitting surfaces of the plurality of light sources face downward,
Is disposed at a position where the and the color converting member and the support member is sandwiched between the inclined surface of the pair of the reflector, characterized that you support the color conversion member in the direction of gravity and opposite said support member is in the position A light emitting device. 前記色変換部材の突起は、各光源の光軸上に頂点を持つ円錐状であることを特徴とする請求項１の発光装置。 2. The light emitting device according to claim 1 , wherein the protrusion of the color conversion member has a conical shape having a vertex on the optical axis of each light source.
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